Punching device.



W. P. PITT.

PUNCHING DEVICE.

APPLICATION FILED JUNE 29, 1912.

Patented Nov. 21, 1916.

3 SHEETS-SHEET I.

| I l l l l l I l 1 l I l I i a w w m ,QQ ATTORNEV.

w. P. Pm.

PUNCHING DEVICE.

APPLICATION FILED HJNEZQ. 1912.

1,205,257. Patented Nov. 21, 1916.

3 SHEETSSHEET 2.

WITNESSES: INVENTOR.

w. P. PITT. PUNCHING DEVICE.

APPLICATION FILED JUNE 29, I9I2.

Patented Nov. 21, 1916.

3 SHEETS-SHEET 3.

A TTORNE y.

an eerie.

WILLIAM P. PITT, OF INDEPENDENCE, MISSOURI, ASSIGNOR TO IRVING-PITTIILANU- FAC'I'URING GOIVIPANY, OF KANSAS CITY, NEISSOURI, A CORPORATIONOF MISSOURI.

PUN CHIN Gr DEVICE.

Application filed June 29, 1912.

To all whom it may concern:

Be it known that I, lNILLIAM P. Prrr, a citizen of the United States,residing at Independence, in the county of Jackson and State ofMissouri, have invented a certam new and useful Improvement in PunchingDevices, of which the following is a speclfication.

My invention relates to improvements in punching devices.

My invention is particularly adapted for use in perforating sheets ofpaper used in loose leaf books and binders.

One object of my invention is to provide a device which may be readilyadjusted so as to punch the holes in a sheet at different distancesapart.

Another object of my invention is to provide a construction in which thepunches and dies used may be quickly removed from the machine and otherssubstituted therefor.

My invention provides further novel means for operating the punches.

My invention also provides a die member with novel means for laterallydeflecting the punchings to prevent their piling up under the diemember.

My invention further provides novel means for adj ustably regulating thedistance from the ends of the sheets of the perforations punchedtherein.

My invention further provides a novel side edge gage mechanism by whicha great range of adjustment may be obtained.

Other novel features of my invention are hereinafter fully described andclaimed.

1n the accompanying drawings which illustrate the preferredand modifiedforms of my invention, Figure 1 is a plan view of the machine. Fig. 2 isa vertical section on the line ab of Fig. 1. Fig. 3 is an en larged sideelevation of one of the cam gages. Fig. 1 is a vertical section on theline c(Z of Fig. 1. Fig. 5 is an enlarged cross section on the line efof Fig. 1. Fig. 6 is an enlarged cross section on the line gh of Fig. 1.Fig. 7 is an enlarged cross section on the line i 7' of Fig. 1. Fig. 8is a vertical section on the line ]t'-Z of Fig. 7. Fig. 9 is an enlargedcross section of a portion of the cam gage mechanism taken on the planeof the line ma of Fig. 2. Fig. 10 is a plan. view of a portion of themachine, showing the side gage in a position opposite to that of Fig. 1.Fig. 11 is a ver- Specification of Letters Patent.

Patented Nov. 21, 1916.

Serial No. 706,557.

tical section on the line 0p of Fig. 10. Fig. 12 is an enlarged crosssection on the line gr of Fig. 1. Fig. 13 is a vertical section showinga modified form of retracting spring for returning the rock shaft to itsinitial position. Fig. 11 is a plan View of one of the die members whichcarries a plurality of punches, the set screw being shown in crosssection. Fig. 15 is a vertical section on the line s-.t of Fig. 141.Fig. 16 is a plan view of a punch and die arranged to cut slots in theupper ends of loose leaves. Fig. 17 is an elevation of the punch shownin Fig. 16.

Similar reference characters designate similar parts in the diifeentviews.

1 designates a base member, which may be ofany desired form andmaterial, and which is shown as an inverted rectangular pan havingrounded corners. The base member 1 is mounted removably in a pan 2preferably covered with a soft material, such as felt 3 to preventscratching of the surface of the support upon which the machine may bemounted. The base member 1 is provided with a longitudinal slot a belowwhich may be secured to the under side of the base member a trough 5having an open end through which punchings de posited in the trough bythe dies may be discharged into the pan or receptacle 2.

Two bearings 6 and 7 are mounted in and secured to the trough 5 adjacentopposite ends thereof. Pivotally mounted in the bearings G and 7 andadapted to be withdrawn endwise therefrom is a horizontal rock shaft 8,which is disposed longitudinally above the slot :1. The rock shaft 8 isprovided with a. crank 9, which has a hole in which one end of the rockshaft is fitted, and which is provided with a longitudinal fin 10, shownin Fig. 12, which is fitted in a longitudinal groove 11 extending,preferably, the entire length of the rock shaft. A screw 12 extendsthrough a hole provided in the crank 9 and is removably fitted in ascrew threaded hole provided centrally in the adjacent end of the rockshaft 8. To rcmovably secure the rock shaft 8 in the bearings 6 and 7one of these bearings, as for example the bearing 6, is provided with ascrew threaded hole 13, shown in Fig. 5, which intersects the horizontalhole in the bearing 6 in which the rock shaft is mounted. In the hole 13is mounted a longitudinally movable member, such as a ball let whichnormally projects into an annular groove 15 provided in the rock shaft8. A coil spring 16 is mounted in the hole 13 and has one end bearingagainst a screw threaded removable plug 17 which is fitted in thethreaded outer end of the hole 13. The other end of the said spring 16bears against the ball 1- and retains the ball normally in the groove.The inner end of the hole 13 is contracted to a diameter small enough toprevent the ball 14; passing inwardly from the hole 13 when the rockshaft 8 is removed from the bearing. A forcible pull endwise on the rockshaft 8 will cause its disengagement from the ball 1% and from thebearing 6, for the purpose of slipping on or off the die members, ashereinafter described.

Referring to Figs. 1, 2, a and 7, 18 designates a plurality of diemembers, each of which is provided with a transverse hole in which therock shaft 8 is slidably and rotatively mounted. The die members 18 aresupported on the trough 5 in the slot 4, and are each adjustablelengthwise of said trough. Each die member 18 at its rear side isprovided with a transverse groove 19, Fig. 7, in which is located thetop portion of the base member 1 which is at the rear side of the slot4. Each die member is also provided with means for releasably looking itto the base member. F or this purpose I have shown a vertical set screw20 mounted in each die member 18 and extending into the groove 19 so asto bear against the upper side of the base member 1. Each die member 18is provided in its forward side with a horizontal slot 21 adapted toreceive therein the sheets of paper or other material which are to bepunched. Each die member 18 is also provided with a vertical hole 22therethrough, said hole intersecting the horizontal hole in which therock shaft 8 is mounted, and also intersecting the slot 21. The lowerend of the hole 22 is located, preferably above the trough 5 so as todischarge punchings therein. T o prevent the punchings accumulating in apile below the hole 22, I provide means for laterally deflecting thepunchings as they emerge from the hole. To effect this function, Ipreferably provide the lower side of each die member 18 with a lip 23which extends partly across the lower end of the hole 22 and is providedwith an upper inclined surface, as shown in Figs. 7 and 8. In the hole22 of each die member 18 is reciprocatively mounted a punch whichoperatively and, preferably, interlockingly engages the rock shaft 8,whereby, when the rock shaft is oscillated, the punch will bereciprocated. This engagement is preferably effected by means of a tooth2 1 on one side of the punch, said tooth being disposed in the groove 11of the rock shaft 8 in the manner of a rack engaging a pinion.

lVhen the rock shaft is rocked in the proper direction, the punch, whichis designated by 25, is moved downwardly across the slot 21 and throughthe leaves which may be placed in said slot. By having the rockshaftextend through, and, preferably, fitting the die members 18, saiddie members serve as bearings for the rock shaft to retain it engagedwith the punches and prevent its being sprung. As shown, theintersecting holes for receiving the rock shaft and punch in each diemember are, preferably, circular to permit the use of a cylindrical rockshaft and punch. To retract the punches 25 upwardly, suitable means isprovided for retractively rocking the rock shaft 8. In Fig. 12 I haveshown for this purpose a bow shaped spring 26, which extends through aslot 27 in the lower end of a vertical plate 28, which extends througha. slot 29 in the base member 1 and has a laterally turned flange 30 atits upper end which is mounted in a. longitudinal slot 31 in the crank9. The ends of the spring 26 bear against the under side of the basemember 1.

In Fig. 13 I have shown a. modification of the spring mechanism forretracting the rock shaft 8. In this modified form both ends of a Ushaped spring 32 extend through the slot 2'? of the plate 28, one arm ofthe spring bearing against the said plate and the other arm bearingagainst the under side of the base member 1. To adjustably regulate thedistance that the punches 25 perforate the sheets from their ends, Iprovide the following described gage mechanism: Each die member 18 tothe rear of the slot 21 is provided with a laterally extending stud 33,

Fig. 2 and Fig. 9, on which is pivoted a gage plate 34 disposed so as toextend across the slot 21 and provided with an eccentric gage surface35. By turning the cam gage plate 34 to different positions on the stud33, the depth to which the sheets to be perforated may be slipped in theslot 21, is regulated. To releasably hold the gage plate 3% in theposition to which it is adjusted, I provide yielding means, preferablycomprising a ball 36 located in a horizontal hole 37 in the die member18 at the inner side of the gage plate 31, and a spring 38 of the coiltype mounted in the hole 37 and normally forcing the ball against thegage plate 34. Said gage plate 3 L on its inner side is provided with aplurality of cavities, preferably depressions, disposed concentricallyrelatively to the stud 33. As the gage plate 34. is turned, the ball 36will be successively forced into the depressions or cavities, which areindicated by 39. For gaging the side edges of the sheets to beperforated, I provide the following described mechanism: In the top ofthe base member 1 adjacent to the bearing 6, is provided a groove 40 inwhich is slidably mounted a horizontal gage plate 41, which has one endupturned at 42, and which is releasably held in the position in which itmay be adjusted by the head 43 of a vertical pin 44, which extendsthrough a slot 45 in the gage plate 41 and through a longitudinal slot46 in the groove 40. A coil spring 47 encircles the pin 44 and has itslower end bearing against a washer 48, which in turn is supported by atransverse pin 49 mounted in the pin 44. The upper end of the spring47bears against a washer 50 mounted on the pin 44 and bearing againstthe under side of the base member 1. The strength of the spring 47 issufficient to hold the gage plate 41 in the position to which it may beadjusted. If it is desired to change the said gage platefrom theposition shown in Fig. 1 to that shown in Fig. 10 and Fig. 11, it islifted at one end against the pressure of the spring 47 so as to clearthe groove 40, after which it may be swung on the pin 44 to adiametrically opposite position, in which position, when released, itwill lie in the groove 40, as shown in Fig. 10. Preferably, as shown,the gage plate 41 is provided along its longitudinal edges with lateralflanges 51 which have their upper sides flush with the top of the pin44. This construction permits a wide range of adjustability and, theflanges 51 serve to prevent the edges of the sheets striking the pin 44when the gage plate 41 is in the position shown in Fig. 10.

In the form of die member shown in Fig. 14 and Fig. 15, a plurality ofpunches 25 are mounted in each die member. Otherwise the die member isas is shown in Fig. 1.

In Fig. 16 and in Fig. 17 I have shown a form of punch adapted to puncha slot in the end of a sheet, the punch designated by 52, being formedsimilar to the punches 25, with the exception that it has a lateral wing53. The die member shown in Fig. 16 has a vertical hole shaped to fitthis punch, otherwise the parts are constructed similarly to the punchand die member shown in Fig. 7.

In the operation of my invention, the rock shaft 8 is pulled out of thebearing 6 and die members 18 are slipped into the trough 5 and upon therock shaft, passing on at the free end of said shaft. When the desirednumber and kind of die members carrying their punches have been placedon the rock shaft, with the teeth 24 of the punches disposed in thegroove 11, the rock shaft 8 is again forced into its proper position inthe bearing 6, with the flange 30 of the plate 28 disposed in the groove31 of the crank 9. The die members 18 are then adjusted along the rockshaft 8 and the trough 5 to the proper positions, after which the setscrews 20 are tightened against the base member 1. The gage plate 41 isthen adjusted to its proper position. The gage plates 34 are alsoadjusted to the proper positions in the die members 18. The sheets to bepunched are then inserted in the slots 21 and against the cam surfaces35 of the gage plates 34, the sheets being also brought laterallyagainst the up turned portion 42 of the gage plate 41. The crank 9 isnow forced downwardly thus rocking the rock shaft 8 so as to force thepunches 25 through the sheets in the slots 21. The punchings will passthrough the holes 22 of the die members 18 and into the trough 5, fromwhich they can be brushed from time to time into the pan 2. Upon thecrank 9 being released, the spring 26 will pull down on the plate 28,thus retracting the crank, and with it the rock shaft 8 and punches 25to their initial positions shown in Fig. 2. By simply loosening the setscrews 2 the die members 18 may be quickly moved to any desired positionon the rock shaft 8. As the teeth of the punches 25 are always in meshwith the rock shaft 8, the rock shaft is always in operative engagementwith the punches.

I do not limit my invention to the structures shown and described, asmodifications, other than shown, may be made, within the scope of theappended claims, without departing from the spirit of my invention.

Having thus described my invention, what I claim and desire to secure byLetters Patent, is

1. In a punching device, a base member having two bearings, a rock shaftpivotally mounted in said bearings and slidable lengthwise out ofengagement with one of said bearings, a die member adjustable lengthwiseon the rock shaft and engaging the base member and removable from therock shaft when said shaft has been disengaged from one of saidbearings, and a punch member reciprocative in said die member andoperatively engaging the rock shaft.

2. In a punching device, a base member having a bearing, a rock shaftpivoted in said bearing, and releasable means for engaging said rockshaft and holding it from withdrawal from said bearing, and a die memberlongitudinally adjustable on the rock shaft.

3. In a punching device, a base member having a bearing provided with atransverse hole, the bearing having another hole intersecting the first,a rock shaft pivoted in the first named hole and having a peripheralgroove, and ayielding locking device mounted in the second hole andadapted to enter said groove.

4. In a punching device, a base member having a bearing having twointersecting holes, a rock shaft pivoted in one hole and having aperipheral recess, a locking de vice mounted in the other hole andadapted to enter said recess, and yielding means for normally forcingsaid locking device into said recess.

5. A die member having a punch hole, and a gage member rotativelyadjustable thereon and having a gage surface eccentric to its axis.

6. A die member havinga punch hole, a gage member rotatively adjustablethereon and having a gage surface eccentric to its axis, and means forreleasably holding the gage member in the position to which it may beadjusted.

7. A die member, a gage member rotatively adjustable thereon and havinga gage surface eccentric to its axis and provided with a plurality ofcavities concentric with its axis, and a locking device carried by thedie member and adapted to successively releasably enter said cavities,when the gage member is rotated.

8. A die member, a gage member rotatively adjustable thereon and havinga gage surface eccentric to its axis and provided with a plurality ofcavities concentric with its axis, and a spring actuated locking devicecarried by the die member and adapted to successively enter saidcavities when the gage member is rotated.

9. A die member having a hole, a gage member rotatively adjustable onsaid mem-- her and having a gage surface eccentric to its axis andprovided with aplurality of cavities concentric with its axis, a balllocated in said hole and adapted to successively enter said cavitieswhen the gage member is turned, and a spring for normally forcing saidball into said cavities.

10. In a punching device, a base member having a bearing, a rock shaftmovable at one end into and out of engagement with said bearing, and adie member in which the rock shaft is pivoted, the die member beingslidable onto and off from said rock shaft at said end of said rockshaft when the said end is disengaged from said bearing.

11. In a punching device, a base member, a reversible stop gagelongitudinally slidably and pivotally engaging said base member andyielding means for retaining said gage in slidable engagement with thebase member.

12. I11 a punching device, a base member having guiding means, areversible stop gage normally slidably engaging said guiding means ineither of two positions, the gage being movable out of engagement withthe guiding means, and when so disengaged being reversible in position,and yielding means for holding the gage in engagement with said guidingmeans.

13. In a punching device, a base member having a bearing, a rock shaftpivoted in and movable at one end out of engagement with the bearing, adie member adjustable lengthwise on. the rock shaft and movable onto andoff from said end of the rock shaft when it is disengaged from saidbearing, and a punch slidable in the die member and having toothedengagement with the rock shaft, said toothed engagement permittinglongitudinal movement of the die member on the rock shaft to differentpositions Without disengagement of the punch from the rock shaft.

1 1. A die member having a punch hole therethrough and adapted to cut a.punching the full size of the hole, and having closely adjacent to thedischarge end of said hole means for laterally deflecting punchingsemerging therefrom.

15. A die member having a punch hole therethrough and adapted to cut apunching the full size of the hole, and having closely adjacent to thedischarge end of said hole an inclined lip extending partly across saidhole.

16. A die member having a punch hole therethrough and adapted to cut apunching the full size of the hole, and having closely adjacent to thedischarge end of said hole an inclined lip extending partly across saidhole and a shallow punching receptacle into which the punchings aredischarged from said hole.

17. A die member having a punch hole therethrough, and a punchingreceptacle upon which said die member is longitudinally adjustablymounted, and into which the punchings are discharged from said hole.

18. A die member having a punch hole therethrough, and a punchingreceptacle of channel form and having an open discharge end and intowhich the punchings are discharged from said hole.

19. A die member having a PUIlCll hole therethrough, and achannel-shaped punching receptacle having an open discharge end and uponwhich the die member is longitudinally adjust-ably mounted, and intowhich the punchings are discharged from said hole.

20. A die member having a punch hole therethrough and adapted to cut apunching the full size of the hole, and provided closely adjacent to thedischarge end of said hole with an inclined lip extending partly acrossthe hole, and a shallow channelshaped punching receptacle having an openend and adapted to receive punchings from said hole.

21. -A base having a slot, a channel-shaped punching receptacle havingan open discharge end and secured to the under side of said base andextending across said slot and a die member having a punch holedischarging into said receptacle.

22. A base having a slot, a channelshaped punching receptacle having anopen discharge end and secured to the under side of said base andextending across said slot,

and a die member longitudinally adjustable in said slot and having apunch hole discharging into said receptacle.

23. A pan, a hollow base mounted in said pan and having a slot, achannel-shaped punching receptacle having an open end and secured to theunder side of said base and extending across said slot, and a die memberhaving a punch hole discharging into said receptacle.

24. A pan, a hollow base mounted therein and having and having a slot, achannel shaped punching receptacle open at one end and extending acrosssaid slot between the pan and base, and a die member having a punch holedischarging into said receptacle.

25. A pan, a hollow base mounted therein and having a slot, achannel-shaped punching receptacle open at one end and disposed betweenthe pan and base below said slot, and a die member having a punch holedischarging into said receptacle and provided with an inclined lipextending partly across and closely adjacent to the dis charge end ofsaid hole.

26. A base having a hole therethrough, a rock member pivoted to saidbase, a spring having a hearing at the under side of said base, andconnecting means extending through said hole and connected to said rockmember and to said spring and adapted to be retracted by said spring andto retract said rock member, when the rock member is swung from apre-determined position.

27. A base having a hole therethrough, a rock shaft pivoted thereto andprovided with a crank handle, a spring adapted to bear against the underside of said base and a member extending through said hole and connectedto said spring and to said handle.

28. A base having a hole therethrough, a rock shaft pivoted thereto andprovided with a crank handle having a notch, a connecting memberextending through said hole and having a projection disposed in saidnotch, and a spring having a bearing against the under side of said baseand secured to said member.

29. A base having a slot, a channelshaped punching receptacle open atone end and secured to the under side of said base and extending acrosssaid slot, a die member having a punch hole discharging into saidreceptacle and provided with a notch adapted to receive said base, and asecuring screw mounted in said die member and extending into said notchand adapted to bear against the upper side of said base.

30. A punching machine provided with a base, a cylindrical rock shaftpivotally mounted thereon and provided with a longitudinal grooveextending lengthwise from one end of the shaft, a die memberlongitudinally movable on the rock shaft and supported by said base, apunch slidably mounted in said die member and having a tooth mounted insaid groove, and a crank handle fitted on said rock shaft and havingaprojection extending into saic. roove.

31. In a punching device, a rock shaft having a longitudinal groove, adie memher in which the rock shaft is oscillatable and longitudinallyadjustable, and a punch member reciprocative in the die member andprovided with a single tooth mounted in said groove. 1

32. In a punching device, a rock shaft having a longitudinal groove, adie member, and a punch member reciprocative in the die member andhaving a single tooth mounted in said groove.

In a punching device, a rock shaft having a longitudinal groove, a diememher in which the rock shaft is oscillatable, and a punch memberreciprocative in the die member and having a single tooth mounted insaid groove.

34. In a punching device, a cylindrical rock shaft having a longitudinalgroove, a die member, and a cylindrical punch member reciprocative inthe die member and having a single tooth mounted in said groove andcontained wholly within the cylindrical surface of the punch member.

35. In a punching device, a cylindrical rock shaft having a longitudinalgroove, a die member, and a punch member reciprocative in the die memberand having a sin gle tooth mounted in said groove and lying whollywithin the lines of the bearing surface of the punch member.

In testimony whereof I have signed my name to this specification inpresence of two subscribing witnesses.

WILLIAM P. PITT.

Witnesses:

WARREN D. HoUsn, ELMA L. THOMPSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

- Washington, D. G.

